From 90b1e7a57880fb66437ab7db39e1e65ca0372822 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 17 Dec 2009 21:24:33 -0500 Subject: fsnotify: allow marks to not pin inodes in core inotify marks must pin inodes in core. dnotify doesn't technically need to since they are closed when the directory is closed. fanotify also need to pin inodes in core as it works today. But the next step is to introduce the concept of 'ignored masks' which is actually a mask of events for an inode of no interest. I claim that these should be liberally sent to the kernel and should not pin the inode in core. If the inode is brought back in the listener will get an event it may have thought excluded, but this is not a serious situation and one any listener should deal with. This patch lays the ground work for non-pinning inode marks by using lazy inode pinning. We do not pin a mark until it has a non-zero mask entry. If a listener new sets a mask we never pin the inode. Signed-off-by: Eric Paris --- fs/notify/fsnotify.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/notify/fsnotify.h') diff --git a/fs/notify/fsnotify.h b/fs/notify/fsnotify.h index 204353c0f663..1be54f6f9e7d 100644 --- a/fs/notify/fsnotify.h +++ b/fs/notify/fsnotify.h @@ -20,6 +20,8 @@ extern __u32 fsnotify_vfsmount_mask; /* destroy all events sitting in this groups notification queue */ extern void fsnotify_flush_notify(struct fsnotify_group *group); +extern void fsnotify_set_inode_mark_mask_locked(struct fsnotify_mark *fsn_mark, + __u32 mask); /* add a mark to an inode */ extern int fsnotify_add_inode_mark(struct fsnotify_mark *mark, struct fsnotify_group *group, struct inode *inode, -- cgit v1.2.2